Originally Posted by ShelledPants
Another note: Just because a gun was released in a certain year doesn't necessarily mean they are not recently manufactured still.
New guns come out all the time, and die with little report, as they simply can't match up to reliable guns made previously.
Also, companies don't always update their designs annually. Many AEGs are still based off of the Tokyo Marui design which is over twenty years old. So even if you wish to change something, and you will, there are plenty of upgrade parts out there.